#pragma once
#include<iostream>

class caculator
{
public:
	//加法运算
	void addShow(double& a, double& b);  

	//减法运算
	void minusShow(double& a, double& b); 

	//乘法运算
	void mulShow(double& a, double& b); 

	//除法运算
	void divShow(double& a, double& b);   

};